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LAWAREC Laser Warning Receiver


The LAWAREC (LAser WArning RECeiver) is a system used for detecting laser and radar irradiation aimed at protected military vehicles and other objects.

USE AND DESCRIPTION:

The detection system of laser and radar exposure is primarily aimed at the protection of objects against warfare devices that use laser beams for aiming, designation or recognition or radar scanning..

The construction of the detector head enables it to be installed on all kinds of combat and transport vehicles and also on civilian or military stationary objects (for example communication and combat centers, gasoline pumps, bridges, etc.) while the distance between the detection head and the control unit can be from zero to 200 meters. If needed, it can be extended several times.

Detection head is installed on convenient locations on the exterior of the object so that it does not interfere with other functional systems (observation systems, weapon systems etc.).

There are three types of detection heads - detection heads containing either only laser sections with 8 or 12 spatially oriented IR receivers, or a combination of radar sections with 4 radar detection modules and 8 or 12 spatially oriented IR receivers.

The central unit located inside the object processes incoming information from the detection head, evaluates them, and then offers the operator a summary about the laser and radar activities of the enemy. Simultaneously it suggests a solution to the actual situation (firing smoke grenades) which in semi-automatic mode waits for the operator's confirmation and in automatic mode directly executes the countermeasures to defeat enemy activities.

The central unit indicates the actual state in real time, and sends this information through the serial link to the superior system; it also sends an audio signal indicating a threat to the intercom. Simultaneously, it saves all incidents on the internal memory for later review.

Smoke grenade launchers are connected to the central unit (max. two sets, 8 smoke grenades each) to make a smoke screen between the protected object and the source of irradiation.

The central unit also contains security circuits (interlock) as protection against unwanted firing of smoke grenades in the case of an open vehicle hatchway, avoiding injury to the persons on the object. This protection can be in case of the necessity manually blocked for the purpose of manual grenades firing. In automatic mode (in the combat situation), the protection is blocked permanently.

To switch the automatic mode on, it is necessary to keep the algorithm of switching in order to avoid accidental unwanted switching to this mode by reason of the operators' safety against unwanted grenade firing.

Additionally, the central unit allows manual firing of selected smoke grenades in case of the complete failure of internal electronics. This mode with the indication of the grenade launcher's status is fully autonomous and independent of the electronic circuits of the unit. That means that for the operation in manual mode, only board 24 V is needed.


TECHNICAL DATA:




Detection head
Number of detection modules
Number of radar detection modules
Spectral range of IR detection
Threshold intensity of IR detection
Pulse width:
Sensitivity of radar detection modules
Field of vision of modules in azimuth
Field of vision of modules in elevation
Total field of vision of the detector in azimuth
Total field of vision of the detector in elevation
Weight
Operating temperature:

Control unit
Number of IR distinguished sectors in azimuth
Number of radar distinguished sectors in azimuth
Number of IR distinguished sectors in elevation
Angle IR resolution in azimuth
Angle radar resolution in azimuth
Length of IR acoustic warning
Radar accoustic warning

Length of visual warning
Time delay of the reaction (in autonomous mode)
Power input
Power consumption
Dimensions
Frequency of false detections

LW5-8D
8
-
7501750 nm (2200 nm)
less or equal 10 W/m2
10500 ns
-
45
-20+60
360
80
2,5 kg
-20+50C


16
-
1
22,5
-
can be set 210 s
-

can be set 210 s
can be set 0,5 8 s
24 V (15 30V=)
12 W
100 x 160 x 50 mm
less or equal to 1/24h

LW5-12D
12+1
-
7501750 nm (2200 nm)
less or equal 10 W/m2
10500 ns
-
30
-20+60
360
80
2,5 kg
-20+50C


24
-
2
15
-
can be set 210 s
-

can be set 210 s
can be set 0,5 8 s
24 V (15 30V=)
12 W
100 x 160 x 50 mm
less or equal to 1/24h

LW5-8D-4R
8
4
750-1750 nm (2200 nm)
less or equal 10 W/m2
10500 ns
-51 dBm
45
-20+60
360
80
3,1 kg
-20+50C


16
4
1
22,5
90
can be set 210 s
according to real radar scanning
can be set 210 s
can be set 0,5 8 s
24 V (15 30V=)
12 W
100 x 160 x 50 mm
less or equal to 1/24h


CONTROL PANEL



EXAMPLE OF LAWAREC INSTALLATION

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